The Journal of Space Technology and Science
Online ISSN : 2186-4772
Print ISSN : 0911-551X
ISSN-L : 0911-551X
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Volume 2, Issue 2
Displaying 1-4 of 4 articles from this issue
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Articles
  • Marine Observation Satellite-1 (MOS-1)
    Yoshihiro ISHIZAWA, Takeshi MASUDA, Susumu YOSHITOMI
    1986 Volume 2 Issue 2 Pages 2_1-2_10
    Published: 1986
    Released on J-STAGE: September 02, 2013
    DOIhttps://doi.org/10.11230/jsts.2.2_1
    JOURNAL FREE ACCESS
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    Marine Observation Satellite-1 (MOS-1), the first Japanese earth observation satellite, is intended to establish fundamental technologies for earth observation satellite, primarily by observing oceanic phenomena such as ocean color and temperature. It is planned to be launched by a two-stage N-II Launch Vehicle in early 1987 from Tanegashima Space Center (TNSC) of National Space Development Agency of Japan (NASDA), and placed into a sun-synchronous and near-recurrent orbit at an altitude of about 909 km. Outline of MOS-1 system and operation is described in this paper.
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  • Communications, Tracking and Orbit Determination of SAKIGAKE and SUISEI Encountering Halley’s Commet Using Usuda Station
    Tomonao HAYASHI, Toshimitsu NISHIMURA, Tadashi TAKANO
    1986 Volume 2 Issue 2 Pages 2_11-2_19
    Published: 1986
    Released on J-STAGE: September 02, 2013
    DOIhttps://doi.org/10.11230/jsts.2.2_11
    JOURNAL FREE ACCESS
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    The first Japanese deepspace probes called SAKIGAKE and SUISEI were launched from the Uchinoura Launching Site, located at 1,500 km south-west of Tokyo, respectively on January 8 and August 19, 1985. The Institute of Space and Astronautical Science has constructed a gigantic antenna -64 m in diameter - in Usuda, located at 150 km north-west of Tokyo. These probes successfully encountered Halley’s comet in March, 1986. In this paper, the outlines of communication systems, tracking systems and the way of orbit determination of the probes throughout the mission, will be discussed together with operational results.
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  • Preliminary Study on Liquefied Air Cycle Engine
    Hiroyuki HIRAKOSO, Takahiro ITOH, Keiichi HASEGAWA
    1986 Volume 2 Issue 2 Pages 2_20-2_24
    Published: 1986
    Released on J-STAGE: September 02, 2013
    DOIhttps://doi.org/10.11230/jsts.2.2_20
    JOURNAL FREE ACCESS
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    Liquefied air cycle engine (LACE) has some merits for application to single-stage-to-orbit (SSTO) vehicle engine. Characteristics and feasibility test plan were studied preliminarily. The most critical key technology of elimination of obstacle blockage at air condensor inlet was confirmed by a feasibility test.
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  • Numerical Analysis of a Flow in an MPD Thruster Using One-Fluid Model
    Toshitaka FUJIWARA, Hiroyuki YAMADA
    1986 Volume 2 Issue 2 Pages 2_25-2_36
    Published: 1986
    Released on J-STAGE: September 02, 2013
    DOIhttps://doi.org/10.11230/jsts.2.2_25
    JOURNAL FREE ACCESS
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    A flow in an MPD thruster having a cone-cylinder cathode is analyzed. The magneto-hydrodynamic equations based on one-fluid model are solved using the MacCormack-FCT explicit finite difference scheme. In order to eliminate a constraint on extremely small time steps of integration originated from the low electric conductivity of plasma gas, a switch-over successive approximation technique is proposed to advance time long enough to observe interesting physical phenomena.
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